- molting hormones: [[2022-07-18 Blood|Blood Newsletter]] - testosterone: [[2022-05-02 Hunting|Hunting Newsletter]] - oxytocin & other bonding hormones: [[2022-06-06 Love|Love Newsletter]] - [[impact of moon phases]] on hormonal cycles - insulin: [[The Sugar Conspiracy by Ian Leslie]] - I enjoyed this [deep dive into castratos](https://astralcodexten.substack.com/p/your-book-review-the-castrato?s=r) via the [[Astral Codex Ten]] book review series. The comparison to the x-men was a useful way of thinking about it, as was the explanation of the biology of testoerstone's impacts on humans and how _not_ having testes impacts development.